I'm currently working on an interface using the bi-directionality of an LED array. They would display a target which the finger has to touch and sense it to locate if the target has been accurately touched...
I have watched Han's video (http://cs.nyu.edu/~jhan/ledtouch/index.html) and have looked at patents for using leds as sensors, but unfortunately I'm quite new to all of this and am a bit lost...
If by any chance you know of a program that does the same thing (array of led translated to screen) or that you have it as 'old work' and that you have moved on to something else, could you please point to me where I could find them? This kind of thing is very helpful (for anyone who is interested) http://www.provolot.com/projectlog/2007/05/bidirectional_led_sensing_proc.html
I've got very limited knowledge of processing (and arduino coding in general) and a few lines of working code would therefore help me greatly.
with best wishes,